Eventmachine talk - Aug 2008 - Server-Push Client

I''m working on a Ruby client to grab image frames from a
network-connected camera (e.g. one of these:
http://www.axis.com/products/video/video_server/ ).  I''m currently
using Curb for the HTTP connection, with my own code to parse the
multipart/x-replace responses.

I''d like to switch to using EM (as inspired by AMQP), but looking at
the HttpClient/Client2 APIs, there doesn''t appear to be any
easy way to add server-push support.  Both seem to assume that there''s
exactly only response per request, and that the whole
response must be stored, which are both deal-breakers for server-push.

Before I started hacking away, I thought it would be best to see if anyone else
has already done any work on server-push in EM, or
if there were any suggestions on the easiest way to add it.

Thanks ...

-- Steve

On 14 Aug 2008, at 17:52, Steve Sloan wrote:
> I''m working on a Ruby client to grab image frames from a network-
> connected camera (e.g. one of these:
http://www.axis.com/products/video/video_server/
>  ).  I''m currently using Curb for the HTTP connection, with my own
> code to parse the multipart/x-replace responses.
>
> I''d like to switch to using EM (as inspired by AMQP), but looking
at
> the HttpClient/Client2 APIs, there doesn''t appear to be any easy
way
> to add server-push support.  Both seem to assume that there''s
> exactly only response per request, and that the whole response must
> be stored, which are both deal-breakers for server-push.
>
> Before I started hacking away, I thought it would be best to see if
> anyone else has already done any work on server-push in EM, or if
> there were any suggestions on the easiest way to add it.
I built the pre-requisite capabilities to do the server side stuff in
Thin, an EventMachine based web server. I''ve not had a need for a
client yet, but that would be a very good idea to build.

http://github.com/raggi/thin/tree/async_for_rack/
>
>
> Thanks ...
>
> -- Steve
>
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> Eventmachine-talk at rubyforge.org
> http://rubyforge.org/mailman/listinfo/eventmachine-talk

I''ve added multipart support to HttpClient2.  See
http://github.com/CodeMonkeySteve/eventmachine/ if interested.  The test
coverage is a bit sparse, so I''m not sure if it''s quite ready
for prime
time yet.

-- Steve